update s2i to devfile conversion as per new url design

[adisky]

What type of PR is this?
/kind bug

What does does this PR do / why we need it:
update s2i to devfile conversion to not save url info in env.yaml.

Which issue(s) this PR fixes:

Fixes #3910

PR acceptance criteria:

• Unit test

• Integration test

• Documentation (not needed)

• I have read the test guidelines

How to test changes / Special notes to the reviewer:

[codecov]

Codecov Report

Merging #3930 into master will increase coverage by 0.04%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #3930      +/-   ##
==========================================
+ Coverage   44.78%   44.82%   +0.04%     
==========================================
  Files         143      143              
  Lines       13911    13898      -13     
==========================================
  Hits         6230     6230              
+ Misses       7089     7076      -13     
  Partials      592      592              

Impacted Files	Coverage Δ
pkg/odo/cli/utils/convert.go	0.00% <0.00%> (ø)

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[girishramnani]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: girishramnani

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• OWNERS [girishramnani]

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[maysunfaisal]

works good!

/lgtm